Nirmalya Kajuri
@kajunut.bsky.social
Assistant Professor of Physics at IIT Mandi and Science Writer. String Theory.
November 5, 2025 at 7:33 PM
This is the phase difference between the two superconductors.
The phase acts like a particle moving in a “washboard” potential.
The phase acts like a particle moving in a “washboard” potential.
October 7, 2025 at 6:10 PM
This is the phase difference between the two superconductors.
The phase acts like a particle moving in a “washboard” potential.
The phase acts like a particle moving in a “washboard” potential.
The 2025 Nobel Prize in Physics goes to John Clarke, Michel Devoret, and John Martinis —
“for the discovery of macroscopic quantum mechanical tunnelling and energy quantisation in an electric circuit.”
Here's what I understand of their work ⚛️🧪🧵
“for the discovery of macroscopic quantum mechanical tunnelling and energy quantisation in an electric circuit.”
Here's what I understand of their work ⚛️🧪🧵
October 7, 2025 at 6:10 PM
The 2025 Nobel Prize in Physics goes to John Clarke, Michel Devoret, and John Martinis —
“for the discovery of macroscopic quantum mechanical tunnelling and energy quantisation in an electric circuit.”
Here's what I understand of their work ⚛️🧪🧵
“for the discovery of macroscopic quantum mechanical tunnelling and energy quantisation in an electric circuit.”
Here's what I understand of their work ⚛️🧪🧵
Boiling a black hole
August 13, 2025 at 8:40 PM
Boiling a black hole
When Ed Witten is your TA (From Zee's QFT in a nutshell)
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August 10, 2025 at 8:44 PM
When Ed Witten is your TA (From Zee's QFT in a nutshell)
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August 4, 2025 at 1:07 AM
Sabine on normal scientists: grifters misleading the public for money
Sabine on Avi "alien hunter" Loeb: a little too eager
⚛️🧪
Sabine on Avi "alien hunter" Loeb: a little too eager
⚛️🧪
July 29, 2025 at 7:35 PM
Sabine on normal scientists: grifters misleading the public for money
Sabine on Avi "alien hunter" Loeb: a little too eager
⚛️🧪
Sabine on Avi "alien hunter" Loeb: a little too eager
⚛️🧪
There's always that one guy in the audience
![“[Hawking] dazzled students at a Caltech (California Institute of Technology) seminar when he dictated a forty-term version of an important equation from memory. As his assistant finished writing the last term, his colleague, Nobel laureate Murray Gell-Mann, who happened to be sitting in on the talk, stood up and declared that Hawking had omitted a term. Gell-Mann was also working from memory.”
Excerpt From
Hawking Hawking
Charles Seife](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:yf6wn5nbfns6fypylaq2qb5r/bafkreihcwsqi5ekfcgaxc55q7hccaesec2ulrubcr27tgpbdwiq7aveddi@jpeg)
July 29, 2025 at 1:50 AM
There's always that one guy in the audience
⚛️ Some people keep roses, some people
July 22, 2025 at 8:04 PM
⚛️ Some people keep roses, some people
String theory deals with strings. These strings can be closed or open.
In 1986, Kawai, Lewellen & Tye noticed that any closed‑string "scattering amplitude"* can be written as a product of two open‑string amplitudes.
This is now known as the KLT relations.
In 1986, Kawai, Lewellen & Tye noticed that any closed‑string "scattering amplitude"* can be written as a product of two open‑string amplitudes.
This is now known as the KLT relations.
July 20, 2025 at 10:44 PM
String theory deals with strings. These strings can be closed or open.
In 1986, Kawai, Lewellen & Tye noticed that any closed‑string "scattering amplitude"* can be written as a product of two open‑string amplitudes.
This is now known as the KLT relations.
In 1986, Kawai, Lewellen & Tye noticed that any closed‑string "scattering amplitude"* can be written as a product of two open‑string amplitudes.
This is now known as the KLT relations.
Harvard astrophysicist strikes again 🧪
July 20, 2025 at 12:00 PM
Harvard astrophysicist strikes again 🧪
A thread on how gauge/gravity duality tells us to take string theory very seriously. ⚛️🧵
No its not the usual holographic universe argument.
Let us start with a quick intro to the duality from that noted string diehard, Sabine Hossenfelder
No its not the usual holographic universe argument.
Let us start with a quick intro to the duality from that noted string diehard, Sabine Hossenfelder
July 19, 2025 at 12:49 PM
A thread on how gauge/gravity duality tells us to take string theory very seriously. ⚛️🧵
No its not the usual holographic universe argument.
Let us start with a quick intro to the duality from that noted string diehard, Sabine Hossenfelder
No its not the usual holographic universe argument.
Let us start with a quick intro to the duality from that noted string diehard, Sabine Hossenfelder
Sabine Hossenfelder dropped this gem today, in response to my post on X. The context here is Weinstein's GU having anomalies.
That second sentence is incredible.
A classical theory develops issues when you try to quantize it? Well have you considered that quantum theory is not fundamental?
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That second sentence is incredible.
A classical theory develops issues when you try to quantize it? Well have you considered that quantum theory is not fundamental?
⚛️
July 18, 2025 at 9:45 PM
Sabine Hossenfelder dropped this gem today, in response to my post on X. The context here is Weinstein's GU having anomalies.
That second sentence is incredible.
A classical theory develops issues when you try to quantize it? Well have you considered that quantum theory is not fundamental?
⚛️
That second sentence is incredible.
A classical theory develops issues when you try to quantize it? Well have you considered that quantum theory is not fundamental?
⚛️
Thanks vro. For many years, India has been losing top scientific talent to US. Looks like the policies of the current US admin will finally put an end to that by kneecapping US universities. Amazing.
May 25, 2025 at 12:24 AM
Thanks vro. For many years, India has been losing top scientific talent to US. Looks like the policies of the current US admin will finally put an end to that by kneecapping US universities. Amazing.
Who made this shitty ⚛️ joke
May 13, 2025 at 6:02 PM
Who made this shitty ⚛️ joke
April 22, 2025 at 8:19 PM
Guys I made a breakthrough
April 7, 2025 at 12:28 AM
Guys I made a breakthrough
#OTD Indian physicist C. V. Vishveshwara(1938-2017) was born. Vishveshwara made many important contributions to general relativity.
His seminal contribution was the discovery of quasi-normal modes in black holes.⚛️
His seminal contribution was the discovery of quasi-normal modes in black holes.⚛️
March 6, 2025 at 10:38 AM
#OTD Indian physicist C. V. Vishveshwara(1938-2017) was born. Vishveshwara made many important contributions to general relativity.
His seminal contribution was the discovery of quasi-normal modes in black holes.⚛️
His seminal contribution was the discovery of quasi-normal modes in black holes.⚛️
This is the famous black hole information loss paradox, one of the biggest open problems in physics.
There are several proposed solutions. Samir Mathur of Ohio State University has a proposal that may be the most radical.
Mathur says that there are no black holes to begin with!
There are several proposed solutions. Samir Mathur of Ohio State University has a proposal that may be the most radical.
Mathur says that there are no black holes to begin with!
March 5, 2025 at 10:20 PM
This is the famous black hole information loss paradox, one of the biggest open problems in physics.
There are several proposed solutions. Samir Mathur of Ohio State University has a proposal that may be the most radical.
Mathur says that there are no black holes to begin with!
There are several proposed solutions. Samir Mathur of Ohio State University has a proposal that may be the most radical.
Mathur says that there are no black holes to begin with!
Black Holes or Fuzzballs?
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Some physicists believe that there are no black holes! The things that look like black holes are complex hyperdimensional objects called "fuzzballs."
Wait what? Read on!
Image: Comparison of simulated images of black hole vs fuzzball (from arxiv.org/abs/2306.01565)
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Some physicists believe that there are no black holes! The things that look like black holes are complex hyperdimensional objects called "fuzzballs."
Wait what? Read on!
Image: Comparison of simulated images of black hole vs fuzzball (from arxiv.org/abs/2306.01565)
March 5, 2025 at 10:20 PM
Black Holes or Fuzzballs?
⚛️🧪
Some physicists believe that there are no black holes! The things that look like black holes are complex hyperdimensional objects called "fuzzballs."
Wait what? Read on!
Image: Comparison of simulated images of black hole vs fuzzball (from arxiv.org/abs/2306.01565)
⚛️🧪
Some physicists believe that there are no black holes! The things that look like black holes are complex hyperdimensional objects called "fuzzballs."
Wait what? Read on!
Image: Comparison of simulated images of black hole vs fuzzball (from arxiv.org/abs/2306.01565)
“I am a retired engineer and I have a new theory of everythi..”
Physicists:
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Physicists:
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March 5, 2025 at 12:45 AM
“I am a retired engineer and I have a new theory of everythi..”
Physicists:
⚛️
Physicists:
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Physicists ⚛️ every time they write ∀ instead of 'for all'
March 2, 2025 at 11:52 AM
Physicists ⚛️ every time they write ∀ instead of 'for all'